Warren ahead of Brown in another Senate poll:A third new poll has found Elizabeth Warren pulling ahead of Senator Scott Brown, giving the Democratic challenger momentum before their first debate on Thursday. Globe politics editor Glen Johnson reports.

President Obama, Mitt Romney trade jabs on China: While the presidential candidates vied to project strength in relations with the Asian power, the Obama administration filed a complaint against China with the WTO. Globe correspondent Callum Borchers and politics reporter Matt Viser cover.